Cisco announces the Cisco® Content Services Gateway-Second Generation (CSG2) Release 3. The Cisco CSG2 provides intelligent network capabilities such as flexible policy management and charging, deep packet inspection, and subscriber and application awareness capabilities that enable mobile operators to quickly and easily offer value-added, differentiated services over and above existing core mobile data services. The CSG2 is the highly scalable fault-tolerant solution needed by mobile operators to meet the demand of their rapidly growing mobile broadband service.
• Service Based Quality-of-service (QoS) control: By applying QoS marking or policing on a per-user or per-service mode, service providers can rate limit peer-to-peer subscriber traffic.
• Network Based Application Recognition (NBAR) Protocol support: Cisco IOS® Software classification engine used for classification of protocols. This includes but is not limited to P2P, Messaging, Voice, Streaming Media, Mail Services, and Internet protocols.
• Attribute maps: A new map matching capability allows matching of specific attributes in Layer 7 HTTP and SIP header thus removing the previous header map limitation.
• Dual quota: Operators can define two options for one-service billing. Traffic can be metered based on time and volume simultaneously.
• Default billing plan: Allows a subscriber to be assigned to a billing plan if no billing plan is assigned by a RADIUS or quota server.
• Call detail record (CDR) suppression for incompletely established TCP sessions: The CSG2 provides the option to not generate CDRs for TCP connections that do not successfully complete the three-way TCP handshake.
• Mix of postpaid and prepaid services: The CSG2 supports the ability to offer postpaid services to prepaid users.
• Uplink next-hop: The CSG2 provides the ability to route specific subscriber traffic to a defined next-hop network device for reasons of security, bandwidth conservation, or packet acceleration.
• Flexible retransmit accounting: The CSG2 can exclude IP byte count for subscriber retransmitted TCP segments, giving the service provider more precise billing capability.
• License Exceeded Notification: Generates notifications (syslog error/SNMP traps) when the number of subscribers exceeds a configured limit.
• Enhanced Adaptability for Network Generated Out-of-Order TCP Packet for Layer 4 Flows: CSG2 will allow Layer 4 flows with missing, delayed, or out-of-order packets to flow through without queueing, improving session throughput while maintaining the CSG2's IP and TCP byte counting advantages.
• Bi-directional support for Selective-ACK for Layer 4 Flows: CSG2 will allow TCP endpoints to fully utilize Selective-ACK for enhanced throughput.
Table 1. Ordering Information